ENM-10 Level Switch. Proper level regulation is critical for operational reliability. Lack of proper regulation can cause improper operation, pump damage or, in the worst case, overflow resulting in environmental and economic consequences. With many years of experience and countless satisfied users, the natural choice for level regulation is the Flygt ENM-10. The Flygt ENM-10 level regulators are the ideal choice for most level control applications, such as wastewater pumping stations and ground water or drainage pumping. When the liquid level reaches the regulator, the bulb tilts, activating the internal micro switch, which starts or stops a pump or triggers an alarm device.